| /* | |
| * linux/include/asm-arm/pgalloc.h | |
| * | |
| * Copyright (C) 2000-2001 Russell King | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License version 2 as | |
| * published by the Free Software Foundation. | |
| */ | |
| #ifndef _ASMARM_PGALLOC_H | |
| #define _ASMARM_PGALLOC_H | |
| #include <asm/processor.h> | |
| #include <asm/cacheflush.h> | |
| #include <asm/tlbflush.h> | |
| #include <linux/slab.h> | |
| extern struct kmem_cache *pte_cache; | |
| static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr){ | |
| return kmem_cache_alloc(pte_cache, GFP_KERNEL); | |
| } | |
| static inline void pte_free_kernel(pte_t *pte){ | |
| if (pte) | |
| kmem_cache_free(pte_cache, pte); | |
| } | |
| /* | |
| * Populate the pmdp entry with a pointer to the pte. This pmd is part | |
| * of the mm address space. | |
| * | |
| * If 'mm' is the init tasks mm, then we are doing a vmalloc, and we | |
| * need to set stuff up correctly for it. | |
| */ | |
| static inline void | |
| pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep) | |
| { | |
| //FIXME - is this doing the right thing? | |
| set_pmd(pmdp, (unsigned long)ptep | 1/*FIXME _PMD_PRESENT*/); | |
| } | |
| /* | |
| * FIXME - We use the old 2.5.5-rmk1 hack for this. | |
| * This is not truly correct, but should be functional. | |
| */ | |
| #define pte_alloc_one(mm,addr) ((struct page *)pte_alloc_one_kernel(mm,addr)) | |
| #define pte_free(pte) pte_free_kernel((pte_t *)pte) | |
| #define pmd_populate(mm,pmdp,ptep) pmd_populate_kernel(mm,pmdp,(pte_t *)ptep) | |
| /* | |
| * Since we have only two-level page tables, these are trivial | |
| * | |
| * trick __pmd_alloc into optimising away. The actual value is irrelevant though as it | |
| * is thrown away. It just cant be zero. -IM | |
| */ | |
| #define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); }) | |
| #define pmd_free(pmd) do { } while (0) | |
| #define pgd_populate(mm,pmd,pte) BUG() | |
| extern pgd_t *get_pgd_slow(struct mm_struct *mm); | |
| extern void free_pgd_slow(pgd_t *pgd); | |
| #define pgd_alloc(mm) get_pgd_slow(mm) | |
| #define pgd_free(pgd) free_pgd_slow(pgd) | |
| #define check_pgt_cache() do { } while (0) | |
| #endif |